Abstract
Interleukin-23 receptor plays a critical role in inducing inflammation and autoimmunity. Here, we report that Th1-like cells differentiated in vitro with IL-12 + IL-21 showed similar IL-23R expression to that of pathogenic Th17 cells using eGFP reporter mice. Fate mapping established that these cells did not transition through a Th17 cell state prior to becoming Th1-like cells, and we observed their emergence in vivo in the T cell adoptive transfer colitis model. Using IL-23R-deficient Th1-like cells, we demonstrated that IL-23R was required for the development of a highly colitogenic phenotype. Single-cell RNA sequencing analysis of intestinal T cells identified IL-23R-dependent genes in Th1-like cells that differed from those expressed in Th17 cells. The perturbation of one of these regulators (CD160) in Th1-like cells inhibited the induction of colitis. We thus uncouple IL-23R as a purely Th17 cell-specific factor and implicate IL-23R signaling as a pathogenic driver in Th1-like cells inducing tissue inflammation.
| Original language | English |
|---|---|
| Pages (from-to) | 1663-1679.e6 |
| Journal | Immunity |
| Volume | 55 |
| Issue number | 9 |
| DOIs | |
| State | Published - 13 Sep 2022 |
| Externally published | Yes |
Keywords
- IL-23
- IL-23 receptor
- T helper cell
- Th1-like cell
- autoimmunity
- colitis
- inflammation
- inflammatory bowel disease
- pre-clinical mouse model
- single-cell RNA sequencing
All Science Journal Classification (ASJC) codes
- Immunology and Allergy
- Immunology
- Infectious Diseases